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- Int21 - MsDos Interrrupt Viewing Program
- Author - Unknown
- ========================================
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- This program when invoked will display the current DOS INT 21
- subfunctions invoked by COMMAND.COM and any external programs on the console.
- You will see the subfunction,a verbose description of the subfunction,and
- any ancillary information.
- There is no best method of using this program.If you ever had a yearning
- to discover what is going on,or you have a bombing or mischevious program,this
- is a useful tool.I have seen the inner working of Command.com {which uses a
- reserved interrupt }.You can also view how ARC.EXE operates .I have also seen
- the INSTALLATION process of Microsoft Windows and now know what was going about.
- In the Communcation Package Procomm 2.3, you can view the setting of four
- interrupt vectors for communcation and the opening of various files. Just be
- prepared for volumes of output on the standard output device.
- You should have a Dos Reference to fully understand the output. Books
- such as the Peter Norton Programmer's Guide to the IBM PC or Inside the IBM PC
- are essential for deeper explanation.They are also less expensive than the DOS
- Technical Reference {at May 1986 $100}.
- Within the time period of one week, I have learned more of the MsDos
- than of any literature.It is an exciting program for those who are curious
- of the inner trappings of the MsDos.
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- Written by Adam Vazquez
- Thursday May 29 1986 10:42 am
- Sent to NYACC #2
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